Cutting-tool.



s. 0. MON'B'ERG.

CUTTING TOOL.

APPLICATION FILED MAY 1 Patented May 6, 1913.

MED

SOREN G. MONBERG, 0F LEADVILLE, COLORADO.

CUTTING-TOOL.

Specification of Letters Patent. Application filed May 15, 1912.

Patented May fi ht Serial No. 697,542.

To all whom 2'75 may concern Be it known that I, Somnv. C. MoNBERo, a citizen of the United States of America, residing at Leadville, in the count of Lake and State of Colorado, have invented new and useful Improvements in Cutting-Tools, of which the following is a specification.

This invention relates to improvements in cutting tools and has particular application to tools for use in conjunction with hydraulic drilling machines.

In carrying out the present invention, it is my purpose to provide a cutting tool which when applied to the work will effectively cut or drill into the same and wherein the motive fiuid will be fed to the cutter to facilitate the cutting or drilling action.

Furthermore; I aim to provide a cutting tool of the class above described which when attached to the driving mechanism of the drilling machine will be rotated by hydraulic pressure with the effect to drill into or cut the work and which will eflectively spread the motive fluid around the cutter so as to enable the latter and facility.

A further object of my invention is the provision of a cutter for the cutting tool which will be constructed of softand rela tively hard metals, the former wearing away under the cutting action so as to relieve the latter of wear and maintain the cutting edge sharp.

A further purpose of the invention is the provision of a cutting tool which will embrace the desired features of simplicity, efficiency and durability, coupled with cheapness of cost and manufacture and which may be applied to any type of hydraulic rotary drilling machine and rotated thereby.

With the above and other objects in view, the invention consists in the construction, combination and arrangement of parts hereinafter set forth in andfalling within the scope of the claims.

, In the accompanying drawing, I have shown one preferred and practical embodiment of my invention, and in this drawing;

Figure l is a perspective view of a cutting toolconstructed 1n accordance with tlie presto operate with ease ent invention. Fig. 2 is a central longitudinal sectional view of the same. Fig. 3 is a transverse sectional View through the shank of the tool. Fig. i is a detail perspective view of the spraying nozzle, and Fig. 5 is a cross head. Fig. 6 is a longitudinal sectional view through the spraying nozzle.

In carrying my invention into practice, the shank of the cutting tool is designed to be connected to a rotary actuating member or may be formed integral therewith and is provided with a spiralpassage way for the water so that such water may be forced under pressure into the passage way with the effect to impart a rotary movement to the shank and cutter head.

Referring now to the accompanying drawing in detail, my improved cutting tool embodies a shank l which is preferably hol' lowed out to provide a longitudinal bore 2, and this bore 2 has mounted therein and preferably rigidly secured to the walls thereof, a partition 3 having a helical pitch with respect to the axis of the bore and forming a spiral passage way 4. The shank 1 at one extremity terminates in a circuin;

ferentially reduced nipple 5 formed with an outwardly flared and tapered wall 6 into i 7 of a conwhich is inserted a nozzle head tour similar to that of the wall 6 and adapted to be wedged into the nipple 5. This nozzle head ate distance beyond the nipple 6 and at diametrically opposite points is provided with spiral passages 8, 8 and has formed transversely thereof a proximately centrally of the outer ends,v of the passages 8, 8 and preferably dovetailed in cross section. Slidably disposed within the groove 9 is an auxiliary cutter 10 having its groove received portion of a configuration corresponding to that of the groove.

The cutter head meral l1 and in the present instance .is of substantially circular outline in cross section and tapered longitudinally and has its relatively small end surrounding the nipple 5 and the nozzle head 7. the cutter head being keyed to the nipple 5 or welded thereto, as desired. This cutter head, as shown, is of a sectional view of the cutter 7 terminates an approprh is indicated by the nu groove 9 disposed aprelatively hard metal,

. connect-ion with the accoinpanyung d connected up to the actuating member of drilling machine in any suua ole manner or pressure and owing to the hel the partition forming such pa;

length exceeding the combined length ot the nipple and nozzle head and incase the la ter and projects outwardly therefrom and is provided at diametrically opposite points with elongated slots 12 opening onto the free extremity of the head and each having its walls beveled or inclined. as at 13, the

inner surface of the free edge of the cutter Work accomplished by the cutter heads is not commensurate with the labor required to resharpen the heads. To ohviete premature the cutting; edges of the head and to prolong the life of the heads, I make the same of softand relatively hard metals so that the soft metal will, under the action of the cutter head, Wear away and relieve the hard metal and consequently the cutting edge of Wear. The interior of the head 11 has a lining 15 of soft metal and a covering 16 of the latter being formed at the slotted portions of the. head and the free extremity thereof to provide the beveled cutting edges 13 and l lrespec tively. Thus, when. the cutter head is applied to the work and rotated to produce the cutting action, the lining 15 i ll "Wear out and receive the bulk of the Wear i the co coring 16 will remain servicenhle a it maintain its cutting edges for a relatively long; time;

From the foregoing" iIlQSCllptlOIl taken in Will the construction,- mode; cl opera i manner of ein 'ili yiugz' my invention will he readily a giparentl. The hollow sl anlt. l formed integraltherewith if such-is found desiruble. The motive 'l'luid, such as W; is forced into the spiral pa u'ay agen a rotary movement to the too. and outu ai'dly oi the nozzle head i hy W of SPllH l p2 runs 8 and is thro 11. against the interior oi the cutter head w th the eii ect to facilitate the cuttii In the 'opemtion ot' the cutting tool, the auxiliary cutter 10 serves to hrcali. rocker other material, and prmeut the from clop'ging up the spiral pa ti, and also as the cutter head ll in uniform its duty in some ill instuuces, it may he liuuul admin- 1 l tageous to discharge water l'iroin the spray forked passa 'es to,

action.

ttllt this purpose, the noii'xle T has termed therein a channel 17 in open communication With the hollow shank l and terminating in 10 it) in open COTHlDUIllCfL tion with i nice secured to one end of the none 3 the opposite sides oi the cutter 10 carried thereby. Thus, the water is discharged out oil the lower end. of the non zlc at the opposite sides of the cutter l0 and impacts against the lower Well of the hole being drilled, therehy facilitating the cutoperation li hile l have herein shown and. described one particular embodiment of my invention by Way of illustration, it is to be understood that I do not confine myself to the precise details of construction herein described and delineated i'nodification and Variation may be made Within the scope of the claims and without departing from the spirit of the invention.

l claim: k

i. A cutting tool comprising hollow shank having; a spiral passage Way therein, a nozzle disposed "within. one end or said shank end provided with spiral pgtssages, and a cutter secured to the nozzle end of such. shank and surrounding said nozzle and extending outwardly thereof,

2. A cutting tool comprising a hollow shank having spiral passage Way thereiiu j 'tion' liming a helical pitch it he s is oil. the shank and forming my, a nozzle dispos' J municetion with the cutter secured to the ncucle shank liEtVl spiral go a nozzle disposed Within one end of so: shank and provided with spiral p i'uunication with old shank, an euitlh iary cutter detachahl connected to nor;- zle head and arranged trans ersely thereof and a cutter l'iead secured to the iiozz' oi. said shank and surrounding said and extending outwardly thereof,

cuttingtool comprisii shank having a i rel passage adopted. to l? V rotai Ol'ilt? tool i, cutter head rigidly" secured to said shank and provided with side and -'l culling cd -zs and comprising body We a lining of soft metal auo a covering ay therein,

nozzle a hollow therein A ting; tool houiprising a hollow shank having a spiral pas age way therein adapted to receive a fluid tuider pressure to end fluid under pressure to I' rotate thetool, and a cutter head on said shank.

- 6. A. cutting tool lcomprising a hollow shank having a spiral passage therein adapt- 5 ed to receive a fluid under pressure to rotate the tool, a nozzle dlspose'd within one end of said shank and provided with a chamber in open communication therewith, and ternnnoting in forked passages, nipples secured to said nozzle and in communication with the 10 passages therein, and a cutter head on said shank. v

In testimony whereof I afiix my signature in presence of two witnesses.

SOREN C. MONBER G. Witnesses c. 'J. McOARrY, R, ALINE WHIPPLE. 

